SimpleX Chat: secure messenger 6.5.4 - App Store

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About SimpleX Chat: secure messenger

SimpleX - the first messaging network without user identifiers of any kind (not even random numbers) - 100% private by design! Security assessments by Trail of Bits: 2022:...

SimpleX - the first messaging network without user identifiers of any kind (not even random numbers) - 100% private by design! Security assessments by Trail of Bits: 2022: https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.html 2024: https://simplex.chat/blog/20241014-simplex-network-v6-1-security-review-better-calls-user-experience.html SimpleX Chat features: - quantum resistant end-to-end encrypted messages, with editing, replies and deletion. - disappearing messages with opt-out per contact/group. - message reactions. - delivery receipts, with opt-out per contact or group. - multiple chat profiles, with hidden profiles. - app access and self-destruct passcodes. - incognito mode - unique to SimpleX Chat. - end-to-end encrypted images and files. - voice messages up to 5 minutes - also end-to-end encrypted. - "live" messages - they update for all recipients as you type them, every few seconds - unique to SimpleX Chat. - connect via one-time invitation links or via long-term public addresses. - secret chat groups - only group members know the group exists and who is the member. - end-to-end encrypted audio and video calls. - connection security code verification, for contacts and group members - to protect from man-in-the-middle attacks (e.g. invitation link substitution). - end-to-end encrypted push notifications (they contain only encrypted meta-data, not the actual content). - encrypted portable chat database - you can transfer your chat contacts and history to another device. - all local files and media are encrypted by default. - animated images and "stickers" (e.g., from GIF and PNG files and from 3rd party keyboards). SimpleX Chat advantages: - privacy of your identity, profile, contacts and metadata: unlike any other existing messaging platform, SimpleX uses no phone numbers or any other identifiers assigned to the users - not even random numbers. This protects the privacy of who you are communicating with, hiding it from SimpleX platform servers and from any observers. - complete protection against spam and abuse: as you have no identifier on SimpleX platform, you cannot be contacted unless you share a one-time invitation link or an optional temporary user address. - full ownership, control and security of your data: SimpleX stores all user data on client devices, the messages are only held temporarily on SimpleX relay servers until they are received. - decentralized proxied peer-to-peer network: you can use SimpleX Chat via your own relay servers and still communicate with people using pre-configured or any other SimpleX relay servers. - fully open-source code. You can connect to anybody you know via link or scan QR code (in the video call or in person) and start sending messages instantly - no emails, phone numbers or passwords needed. Your profile and contacts are only stored in the app on your device - relay servers do not have access to this information. All messages are end-to-end encrypted using open-source quantum resistant double-ratchet protocol; the messages are delivered via relay servers using open-source SimpleX Messaging Protocol. Please send us any questions via the app (connect to the team via the app settings!), email [email protected] or submit issues on GitHub (https://github.com/simplex-chat/simplex-chat/issues) Ream more about SimpleX Chat at https://simplex.chat Get source code in our GitHub repo: https://github.com/simplex-chat/simplex-chat Follow us on X/Twitter (@SimpleXChat), Reddit (r/SimpleXChat/) and Mastodon (https://mastodon.social/@simplex) for the latest updates.

Version History New in v6.5-6.5.4. Public channels - speak freely! - Reliability: many relays per channel. - Ownership: you can run your own relays. - Security: owners hold channel keys. - Privacy: for owners and subscribers. Easier to invite your friends: we made connecting simpler for new users. Safe web links: - opt-in to send link previews. - prevent hyperlink phishing. - remove link tracking. Non-profit governance: to make SimpleX Network last. Read more: https://simplex.chat/blog/20260430-simplex-channels-v6-5-consortium-crowdfunding-freedom-of-speech.html 6.5.4 5d ago New in v6.5-6.5.3. Public channels - speak freely! - Reliability: many relays per channel. - Ownership: you can run your own relays. - Security: owners hold channel keys. - Privacy: for owners and subscribers. Easier to invite your friends: we made connecting simpler for new users. Safe web links: - opt-in to send link previews. - prevent hyperlink phishing. - remove link tracking. Non-profit governance: to make SimpleX Network last. Read more: https://simplex.chat/blog/20260430-simplex-channels-v6-5-consortium-crowdfunding-freedom-of-speech.html 6.5.3 May 27 New in v6.5-6.5.2. Public channels - speak freely! - Reliability: many relays per channel. - Ownership: you can run your own relays. - Security: owners hold channel keys. - Privacy: for owners and subscribers. Easier to invite your friends: we made connecting simpler for new users. Safe web links: - opt-in to send link previews. - prevent hyperlink phishing. - remove link tracking. Non-profit governance: to make SimpleX Network last. New in v6.5.2: channel owners can delete messages from history without time limit. Read more: https://simplex.chat/blog/20260430-simplex-channels-v6-5-consortium-crowdfunding-freedom-of-speech.html 6.5.2 May 15 New in v6.5-6.5.1. Public channels - speak freely! - Reliability: many relays per channel. - Ownership: you can run your own relays. - Security: owners hold channel keys. - Privacy: for owners and subscribers. Easier to invite your friends: we made connecting simpler for new users. Safe web links: - opt-in to send link previews. - prevent hyperlink phishing. - remove link tracking. Non-profit governance: to make SimpleX Network last. Read more: https://simplex.chat/blog/20260430-simplex-channels-v6-5-consortium-crowdfunding-freedom-of-speech.html 6.5.1 May 4 New in v6.5. Public channels - speak freely! - Reliability: many relays per channel. - Ownership: you can run your own relays. - Security: owners hold channel keys. - Privacy: for owners and subscribers. Easier to invite your friends: we made connecting simpler for new users. Safe web links: - opt-in to send link previews. - prevent hyperlink phishing. - remove link tracking. Non-profit governance: to make SimpleX Network last. Read more: https://simplex.chat/blog/20260430-simplex-channels-v6-5-consortium-crowdfunding-freedom-of-speech.html 6.5 Apr 30 New in v6.4-6.4.11 - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.11: - improve error handling. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.11 Mar 30 New in v6.4-6.4.10 - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.10: - improve error handling. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.10 Jan 31 New in v6.4-6.4.9: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.9: - fix dialog for connecting to other users closing on iOS 26. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.9 Jan 8 New in v6.4-6.4.8: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.8: - reduce memory usage when sharing to SimpleX Chat. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.8 12/14/2025 New in v6.4-6.4.7: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.7: - fixes compatibility with iOS 26.1. - fixes export of database larger than 4gb. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.7 11/04/2025 New in v6.4-6.4.6: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.6 has fixes for opening SimpleX links from outside of the app. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.6 10/07/2025 New in v6.4-6.4.5: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.5 has fixes for chats with group admins. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.5 09/12/2025 New in v6.4-6.4.4: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. - improved message delivery. v6.4.4 has fixes and small improvements. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.4 08/28/2025 New in v6.4.3: - UI support for bot commands. - support markdown hyperlinks, e.g.: [click here](https://example.com). - option to remove tracking parameters from the links. New in v6.4-6.4.1: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - approve contact requests from group members. - improved message delivery. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.3 08/12/2025 New in v6.4.2: - manually accept member contact requests, with option to auto-accept. - ignore contact requests from blocked group members. - support links and colors in profile bio/group purpose. New in v6.4-6.4.1: - new UX to connect. - review new group members ("knocking"). - chat with group admins. - improved message delivery. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.2 08/04/2025 New in v6.4.1: - welcome your contacts: set profile bio and welcome message. - enable disappearing messages by default for new contacts. - short SimpleX addresses and group links now include profile images and welcome messages. Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html 6.4.1 07/29/2025 New in v6.4: - Connect faster: message instantly once you tap Connect. - Review group members: chat with new members before they join. - Chat with admins: send your private feedback to group owners. - New group role: Moderator - can remove messages and block members. - Improved message delivery - less traffic on mobile networks. Read about the new UX for making connections in the blog post: https://simplex.chat/blog/20250703-simplex-network-protocol-extension-for-securely-connecting-people.html 6.4 07/15/2025 New in v6.3.1-7 - fixed changing the user profile of the invitation link. - many improvements and fixes for push notifications. - better "secrets" in messages - send them with #secret# markdown. - support joining groups with "knocking" (admins can enable it in v6.4-beta). - support short connection links (BETA). - UI improvements. New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.7 07/07/2025 New in v6.3.1-6 - many improvements and fixes for push notifications. - better "secrets" in messages - send them with #secret# markdown. - support joining groups with "knocking" (admins can enable it in v6.4-beta). - support short connection links (BETA). - UI improvements. New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.6 06/15/2025 New in v6.3.1-5 - many improvements and fixes for push notifications. - better "secrets" in messages - send them with #secret# markdown. - support joining groups with "knocking" (admins can enable it in v6.4-beta). - support short connection links (BETA). - UI improvements. New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.5 06/10/2025 New in v6.3.1-4 - many improvements and fixes for push notifications. - better "secrets" in messages - send them with #secret# markdown. - support joining groups with "knocking" (admins can enable it in v6.4-beta). - support short connection links (BETA). New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.4 05/13/2025 New in v6.3.1-3 - improved chat navigation. - support short connection links (BETA). New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.3 04/25/2025 New in v6.3.1-2 - improved chat navigation. New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.2 04/16/2025 New in v6.3.1 - improved chat navigation. New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3.1 04/03/2025 New in v6.3 Better groups - Mention members and get notified when mentioned. - Send private reports to moderators. - Faster sending messages and faster deletion. Better chat navigation - Organize chats into lists to keep track of what's important. - Jump to found and forwarded messages. Better privacy and security - Private media file names. - Message expiration in chats. Read more: https://simplex.chat/blog/20250308-simplex-chat-v6-3-new-user-experience-safety-in-public-groups.html 6.3 03/10/2025

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Previous Versions

Here you can find the changelog of SimpleX Chat: secure messenger since it was posted on our website on 2023-06-21 08:40:05. The latest version is 6.5.4 and it was updated on 2026-06-09 19:48:41. See below the changes in each version.

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Related Apps

Here you can find apps that are similar with SimpleX Chat: secure messenger.

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